p. 78 "The cultural data of phonograph records was importantly a matter of representation....In many respects it was their physical quality as standardized, mass-produced goods taht helped to enforce their quality as specific cultural data, even as the culture they representd proved variable and unspecific in the extreme....What I am suggesting is that phonograph records frequently proved transgressive of the very cultural categories that they helped to represent as distinct or specific."

on "ethnic" records see Lizbeth Cohen (1990, 105), Victor Greene (1992)